 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  * Sebastian Davids <sdavids@gmx.de> - Images for menu items (27481)
  *******************************************************************************/
 package org.eclipse.ui.views.navigator;

 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.ui.actions.ActionGroup;
 import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;

 /**
  * This is the action group for all the resource navigator actions.
  * It delegates to several subgroups for most of the actions.
  *
  * @see GotoActionGroup
  * @see OpenActionGroup
  * @see RefactorActionGroup
  * @see SortAndFilterActionGroup
  * @see WorkspaceActionGroup
  *
  * @since 2.0
  */
 public abstract class ResourceNavigatorActionGroup extends ActionGroup {

     /**
      * The resource navigator.
      */
     protected IResourceNavigator navigator;
     
     /**
      * Constructs a new navigator action group and creates its actions.
      *
      * @param navigator the resource navigator
      */
     public ResourceNavigatorActionGroup(IResourceNavigator navigator) {
         this.navigator = navigator;
         makeActions();
     }

     /**
      * Returns the image descriptor with the given relative path.
      */
     protected ImageDescriptor getImageDescriptor(String relativePath) {
        return IDEWorkbenchPlugin.getIDEImageDescriptor(relativePath);
      
     }

     /**
      * Returns the resource navigator.
      */
     public IResourceNavigator getNavigator() {
         return navigator;
     }

     /**
      * Handles a key pressed event by invoking the appropriate action.
      * Does nothing by default.
      */
     public void handleKeyPressed(KeyEvent event) {
     }

     /**
      * Makes the actions contained in this action group.
      */
     protected abstract void makeActions();

     /**
      * Runs the default action in the group.
      * Does nothing by default.
      *
      * @param selection the current selection
      */
     public void runDefaultAction(IStructuredSelection selection) {
     }

 }

